[Gmsh] Bug? (AW: Compound Volume)

[Zenker, Dr. Matthias]

Hi,

I have opened your geometry by curiosity and get the error message

Error   : Cannot evaluate bounds on GRegion Compound

When trying to make a 3D mesh, gmsh crashes.
I have used Version 2.7.0, Windoze 32 bit.

While this does not answer your question, I think there might be a bug in the handling of compound volumes...

Matthias

> -----Ursprüngliche Nachricht-----
> Von: David Bernstein [mailto:david.bernstein at meliortechnology.com]
> Gesendet: Sonntag, 5. Mai 2013 06:59
> An: gmsh at geuz.org
> Betreff: [Gmsh] Compound Volume
>
> Can someone educate me on the correct use of Compound Volume?  The
> .geo file below makes two unit cubes with a common face and a compound
> volume out of both cubes.  However, the common face is still meshed.  I
> though the purpose of a compound volume was to combine volumes so that
> interior faces are not respected by the mesher.  I know similar questions
> have been posted before but I haven't found a good answer so I thought I
> would try it again.
>
> Thanks,
> Dave
>
> a = 0.1;
>
> Point(0) = {0, 0, 0, a};
> Point(1) = {1, 0, 0, a};
> Point(2) = {1, 1, 0, a};
> Point(3) = {0, 1, 0, a};
>
> Point(4) = {0, 0, 1, a};
> Point(5) = {1, 0, 1, a};
> Point(6) = {1, 1, 1, a};
> Point(7) = {0, 1, 1, a};
>
> Point(8)  = {0, 0, 2, a};
> Point(9)  = {1, 0, 2, a};
> Point(10) = {1, 1, 2, a};
> Point(11) = {0, 1, 2, a};
>
> Line(0) = {0, 1};
> Line(1) = {1, 2};
> Line(2) = {2, 3};
> Line(3) = {3, 0};
>
> Line(4) = {4, 5};
> Line(5) = {5, 6};
> Line(6) = {6, 7};
> Line(7) = {7, 4};
>
> Line(8) = {8, 9};
> Line(9) = {9, 10};
> Line(10) = {10, 11};
> Line(11) = {11, 8};
>
> Line(12) = {0, 4};
> Line(13) = {4, 8};
> Line(14) = {1, 5};
> Line(15) = {5, 9};
>
> Line(16) = {2, 6};
> Line(17) = {6, 10};
> Line(18) = {3, 7};
> Line(19) = {7, 11};
>
> Line Loop(0) = {0, 1, 2, 3};
> Line Loop(1) = {4, 5, 6, 7};
> Line Loop(2) = {8, 9, 10, 11};
>
> Line Loop(3) = {1, 16, -5, -14};
> Line Loop(4) = {0, 14, -4, -12};
> Line Loop(5) = {2, 18, -6, -16};
> Line Loop(6) = {3, 12, -7, -18};
>
> Line Loop(7) = {4, 15, -8, -13};
> Line Loop(8) = {5, 17, -9, -15};
> Line Loop(9) = {6, 19, -10, -17};
> Line Loop(10) = {7, 13, -11, -19};
>
> Plane Surface(0) = {0};
> Plane Surface(1) = {1};
> Plane Surface(2) = {2};
> Plane Surface(3) = {3};
> Plane Surface(4) = {4};
> Plane Surface(5) = {5};
> Plane Surface(6) = {6};
> Plane Surface(7) = {7};
> Plane Surface(8) = {8};
> Plane Surface(9) = {9};
> Plane Surface(10) = {10};
>
> Surface Loop(0) = {0, 1, 3, 4, 5, 6};
> Surface Loop(1) = {1, 2, 7, 8, 9, 10};
>
> Volume(0) = {0};
> Volume(1) = {1};
>
> Compound Volume(3) = {0, 1};
>
>
>
>
>
>
>
> --
>
>
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